Closure bolting and locking means



April 13, 1937. H; H. KlsTNER i 2,076,897l

CLOSURE BOLTING AND LOCKlNG`MEANS Original Filed April 16, 1932 2Shees--SheeiI l April 13, 1937.

H. H. KISTNER CLOSURE BOLTING ND LOCKING MEANS original Filed-April 16,1932 2 sheets-sheep 2 a7 @na/VZW Patented Apr. 13, 1937 Herman H.Kistner, Baltimore, Md.,assig'norto The Kistner Lock and ApplianceCompany,

Baltimore, Md., a. corporation of Marylandk Applicatiohfiipril 16,1932,serial No. 605,729 j vrRenewed. Marchv 26, 1936 2o Claims.` (el.l 70-90)'I'his invention relates to window sash looks and similar devices andaims generally toprovide improved locking means comprising means forbolti 1 ing members such as window sashes and the like "5 againstrelative opening movement.

Subsidiary to this general object, my invention further aims to providea simple and effective bolting structure which may be positioned at anydesired part of the meeting members to be locked s l0 together, whichwill be invisible from the exterior of the closure, and'which willrender the closure incapable of being opened from the exterior and,incapable of being opened fIOm'the interior un less proper releasing`means be employedand properly manipulatsed.` Other aims of my 1n-vvention, severally and interdependently, arevto improve the details ofconstruction oiV suchrbolting means and 'holding and releasing `meanstherefor, to provide a structure capable ofv being easily and mostuncbtrusively mounted, and one incapable of dislodgment from theexterior `of the closure. .Y

Other objects and particular advantages of variousfeaturesandcombinations of my invention will be made clearly apparent tothose skilled in the art bythev following detailed descriptionofpreferred embodiments of my invention shown in the accompanying`drawings, in which Figs. 1 through f6 illustrate oneembodiment` of myinvention '(Fig. 1 being a perspective View of the same in lockedposition in the meeting rails of a sliding sash window provided with ano`rdi.`

nary rotary cam bolt; Figs. 2`and 3, vertical longitudinal sectionalviewsfof such mounted em` bodiment in unlocked fpositionand in aposition assumed inlocking and unlocking the same, re-LV spectively;lFigs'. 4 and 5,\transvers'e sectional views takenon thelines -t'and 5-5respec-` tively of Fig. 3, looking in the direction ofthe 40 spectiveview of the lock body and key of this embodiment) l Figs. '7 through 10illustrate a second embodiment of my invention (Fig. '7 being a verticallongitudinal sectional View of suchsecond embodiment in mountedposition;` Fig. 8 a horizontal lon-` gitudinal sectional View taken onthe line 8-8 of Fig. 7 looking in the 'direction of the arrows;V

Fig. 9, a transverse sectional'view taken on'the lines A9--9 Vof Figs,'7 and 8 looking inthe direc"l tion of the arrows; and Fig. l0, aperspective disassembly view of the shell of the lock-body of Figs. '7through 9).; while Figs. 11 throught; show a third embodiment Voimyinventicn (Figs. V1l. all@ 1.2 ,being'horizon` arrows; `and Fig.1.6,` a complete disassembly per'-,`

tal longitudinal sectional views of, such third embodiment in anintermediate position and in unl locked position, respectively; andFigs. 13 and. 14,v end and'transverse sectional viewsrespectivelyf takenon the lines l3|3, Fig.r12,'an'd'l4v-l4, Fig. 11.

Referring particularly toFigures 1 through 6 of the drawings, it will beseen that my inven` tion isv primarily intended to be employed inde@pendently of the ordinary fastener provided for".- closures suchassliding sash or easement winlj d'ovv's; and thati'n Figure 1 I haveindicated such independent mounting of an embodiment of my j inventionin the meeting rails 20, 2li of a pair of cambolt sliding sashesprovided with la rotary fastener Z2-#23 of usual type.

As is ,wellknowm the parts of the usual rotary or cam bolt fastener,as`- 22,-23, are securedyby screwsI or th like in cooperating position,upon r V .y 20 the closure, makingthe structure readilygsus-jceptible'to jimmying, which, in lthe case of' sliding sash windowsprovided with fastenersof the transversely movable abutting portions`ci" the type indicated at 2,2-23, in Fig. 1, is usuallyeffectedpbyinserting a pryingtoolunderfthe the upper sash memberv 2l.isalso' well known, it is frequently possible fo'rfa 'maraudeij l' toinsert a thin blade .between the members 20;4 2lra`nd undo the fastener,thisoperation'being commonly referred-toas sliciiig; and inaddition, bycutting a small holein'the'wiridow panf and inserting asuitablesr'i'i'all` instrumentL there? f through, unscrupulous personshave Virequently` been able Ito undo -nearly any type of "viasteningmeans ordinarily employed.'

The device of my invention effectively'prevents!" opening from theexterior byanyof'thefabove means of sliding sash orother'clo'su'restofwhich` it may be 'applied' and inf addition hasnumerousV advantages from the standpoint of simplicity and cheapness ofconstruction' and installation and unobtrusiveness and reliability inoperation.

The form of the device illustrated in Figures" 1 through 6 comprises abody or casing 24, most` conveniently of` tubular form, provided `witharrl internal shoulder Vor abutment 25 at itsiorwra'rd end, shown as acontinuous flange 4at said end." Within this body or casing 24 ismounted a pro?` -jectable bolt member` 2B, and associatedwith the boltand casingI provide interengaging means,4

comprising a bayonet slot 21-28--29 and a locking pin ,3ft 'movabletherein', adapted `to retain the bolt in projectedposition.

As bestshownin" 25` lower sash and forcing the same upwardly'topull outthe screws holding the catch memberZitto Figs. 2 and 6, I prefer tomount the bayonet pin 3|) at the butt end of the bolt member 26 and toemploy a bayonet slot of generally L-shaped formation with its footportion 28 nearest the forward end of the body, and to provide the footportion with an upturned toe portion 29 to receive the pin 30 and retainthe bolt in a projected position and prevent release of the same unlessthe bolt be slightly projected from retained position to free the pin 30from the toe or notch portion 29.

The bolt-member in the form shown is guided longitudinally by means ofthe iiange at the forward end of the casing and by means of a guidingelement 3| extending between the boltmember 26 and the casing 24, andmeans is provided for urging the bolt member toward retracted position,by assembling a compression spring 32 between the abutment 25 of thecasing and an abutment 33 carried by the bolt, and convenientlyconsisting of the front face of the guiding element 3|, which in theform shown comprises a flange integral with or secured to thebolt-member 26 and having a loose sliding fit in the casing 24.

Asis clearly indicated in Figures 2, 3 and 6, the bolt member 26 ispreferably of such length that when retained in projected position, itsbutt end will lie within the butt end of the casing 24, and as it isdesirable to avoid any substantial projection of the bolt from theclosure members when in retracted position, I preferably make theboltbody 24 of a length to t flush with the exposed face of theclosure-member 20, and make the projectable bolt-member of a length lessor approximately no greater than the length of the bolt body 24 (seeFig. 2). In the form of Figures 1 through 6 the butt end of thebolt-member 26, which carries the locking pin 30, is made smooth andsubstantially non-engageable by any turning implement but is madesmaller in diameter than the internal diameter of the casing 24 toexpose a portion of the pin 3D in the space thus provided, to constitutean engageable portion to be utilized in moving the pin 30 in the footportion 2 8 of the bayonet slot. By this construction I position thepoint of engagement for releasing the bolt assembly, when retained inprojected position, so deeply within the casing as to render itextremely difficult to eiect disengagement thereof unless proper keymeans be employed.

In the form shown (see Figs. 3 to 6) such key means .comprises a centralabutment portion 35 adapted to press against the butt-end of the boltmember 26 to effect projection of the same, and one or more forwardlyprojecting tongues 36 adapted to enter the space between the butt-end ofthe bolt 26 and the casing 24 to laterally engage the exposed portion ofthe pin 3U to move the pin to retaining and non-retaining positions inthe foot portion 28 of the bayonet slot.

To correlate particular keys with particular locks and preventmanipulation of the pin 30 by means of thin instruments such as knifeblades or the like, I provide the casing 24, adjacent its butt-end, withone or more inwardly extending protuberances 31 which may be variouslyspaced and positioned longitudinally and circumferentially about thecasing 24, and which are preferably in the form of small pins driventhrough the wall of the casing as best indicated in Fig. 6, with theirheads projecting from the outside of the casing to comprise means forlimiting their entry and means for biting into the wooden sash-frame 20to more securely hold the boltbody 24 in mounted position. To cooperatewith these protuberances or guard pins 31 the key element (see Figs. 3and 6) may be provided with one or more circumferential grooves 38 toalign with the pins during turning movement of the key and with one ormore slots 39 to provide for axial movement of the key to and fromlocking position. With the arrangement shown, the pins 31 and grooves 38and 39 cooperate to prevent removal of the key with the bolt inprojected position, unless it be so far turned as to provide for seatingof the pin 30 in the toe 29 of the bayonet slot upon withdrawal of thekey.

The assembly of this form of my bolt structure, as indicated in Figure6, is a very simple matter involving merely the insertion of the springand bolt assembly into the casing 24 aligned for insertion of the singlepin 30 through a portion of the bayonet slot 21-28-29 and into the pinreceiving hole 39 of the bolt-member 26, after which the pins 31, whichmay have been already partially inserted, may be quickly pressed home tocomplete the assembly. It will be noted that in this form of my devicethe single pin 30 serves as a locking pin, serves in conjunction withthe rear end of the bayonet slot as means to limit the retraction of thebolt, and serves, at its exposed portion, as means manipulable to effectrelease of the parts from= projected position.

The mounting of this form of my device in the window frame is equallysimple, it being necessary merely to provide a straight hole through themeeting rail 20 to enable driving home therein of the bolt assembly, andto provide an aligned recess in the body proper of the cooperatingclosure member 2| into which the bolt member 26 may be projected.Another advantage of the design is that the device may be withdrawnbodily from the window frame by any suitable tool that can be insertedwithin the open end of the casing 24 to engage behind the pins 31.

In the preferred installation of my device I provide a lining thimble 40for this recess, preferably hardened at its bottom 4| to prevent accessto the end of the bolt by drilling from the exterior of the closuremember 2|, and this liner may be provided with a continuous ordiscontinuous flange 42 juxtaposed to the body of the closure member 28when the closure is locked, to guard against driving of thebolt-assembly from its mounted position by application of force to thethimble 4|J. As shown in Figures 1 through 5, the iiange 42 may beemployed to receive attaching screws 43, if this be desired.

As an example of another of the numerous forms in which my invention maybe embodied, I have illustrated in Figures 7 through 10 a form thereofin which the tubular casing is formed in two parts secured together toform a unitary body member, and in which the device is adapted to beoperated by a screw driver or like implement. In this form of my devicethe parts corresponding to those of the embodiment of Figures 1 through6 are indicated by similar reference numerals with the subscript a andit is thought unnecessary to extend this description by furtherreference thereto. The tubular body 24 of this embodment is providedwith an internal channel or structure eiTective as an L-shaped bayonetslot, by means of a slotted sleeve 44, best shown in Figure 10, held inplace by any suitable means, such as the machine screws 45. The pin 3|!aof this embodiment is shorter than the pin 30 of the former embodimentand is adapted to be moved in the slot 21a of the sleeve 44 duringprojection and retraction of the bolt and to be moved out of alignmentAwith the slot to abut the foward end 28a of the sleeve to hold the bolt2liEL in projected position. Furthermore the sleeve` 44 may be providedwith a notch 29a to correspond to the toe 29 of the bayonet lslot in theembodiment of Figures 1 through 6, and for the same purpose.

In this embodiment the spring abutment 33a is shown as a split` ringseated in a groove in the bolt-member 26a, and this element may Vservein addition to the flange a to guide the boltmember 26EL in the casing24a, or it may be simply a loose ring, the guiding means beingconstituted by the inner end of the sleeve 44 and the rear end of thebolt 26a, which (as indicated in dotted lines in Fig. 8) remain inengagement at 3|a when the bolt is in projected position. vFurthermorein this embodiment the slot 21a may extend the entire length of thesleeve 44, asshown, and abutment of the front face 28a of the sleeve 44with the abutment 33a of the bolt, may be depended upon to limit theextent of retraction of the bolt member 26a. In this form, no `part ofthe pin 3i)a is exposed When the bolt is retained in projected position,but the butt-end of the bolt is provided with a kerf 46, enabling theemployment of screw-driver-like means indicated at 41,

- to Aoperate the bolt .from retracted to retained in two parts, onefitting within the other.

position and vice versa. l

`In assembling thisembodiment of the invention it is only necessary tosnap the spring ring 33a into the groove of the' bolt 26a, which mayalready have the pin 3|la secured in place, and to drop the coil spring32a and this assembly into the casing 24a, insertthe sleeve and securethe same as by the machine screws 45.

As a further illustrative embodiment of my invention I have indicatedinFigs. 11 through 14, a form thereof employing a flat key and a key plateretained in place by an outer shell made In the drawings of this formofmy invention I have indicated parts corresponding to those of Figures lthrough 6 by similar reference Anumerals with the subscript b to renderunnecessary repeated description thereof. l

In this embodiment of my inventionthe guiding means SIb and springabutting means 33b are embodied as a loose ring or washer slipped overthe bolt into engagement ,with `a pin conveniently the single'pin 30hwhich is thus provided with an additional function inaddition to thoseserved by the pin 30 in the embodiment of Figs. 1 through 6. The key inthis embodiment is flat and may have its extensions 3|;b of such lengthas to push the sleeve 3|b, 33h slightly forward (see Fig. 1l) to takethe tension of the spring off the bolt before its portion 35lo engagesthe bolt and during movement of the pin 3|)b in the foot and toe of thebayonet slot or'channelZTb, 28h, 29h. In this embodiment the pins 31hare shown extending to such depth that slots 48 are out into the bolt toprovide for reception thereof, although this is a matter of choice in myinvention, and the pins 31h have no heads external of the inner sectionof the tubular body 24h. A key plate 49, which may be fixed or movable,is secured against the butt-end of thertubular body 24b by .means of aflanged shell and is provided with cut away portions 5| to enable entryof the key. When fixed, as in the form shown, the plate and key must beformed to provide for relative rotation during movement of the pin 30bin the foot key plate 49 is ilxed and with certain locations of thepins, 37b, it may be desirable that provision be made for misalignmentof the cut-away portions 5| and the toe 29D of the bayonet slot, as inthe form shown. Notohes in the flat key, corresponding to the grooves 38of the key shown in Figures 3 and 6, provide for turning of the key pastthe pins 37b, in` turning the pin Bb in the foot 28b of the bayonetslot. Y

In the form shown, to project the bolt 26h the key is inserted throughthe horizontally aligned cut-outs 5|, is pushed until the bolt 2Gb isfully projected, and is then turned clockwise, as viewed in Figure 14, afull one-half turn, andwithdrawn in horizontal position leaving the pin3b engaged in the toek 291 of the bayonet slot. To release the bolt fromprojected position, the key is again inserted horizontally, pushedforward until the pin 3|)b is lifted out of the toe 29h, and rotatedthree-fourths of a turn counterclock- Wise, as viewed in Figure I4 tobring the pin 30b -into alignment with the leg 2lb of the bayonet slot,when the key must then be turned clockwise one-fourth turn to align withthe ways 5| to enable retraction of the bolt. Ii desired, suitablypositioned pins 3l `may be employed to make it necessary to hold the keppushed in to enable this last one-fourth turn of clockwise movementnecessary to withdraw it from the lock and allow retraction of the boltunder the inuence of the spring 32b or such other means as may beemployed to urge the bolt toward retracted position.

In connection with certain features of my present application,particularly the association with an embedded projectable boltinstallation of `a lining thimble suchas the thimble 48, 4|, 42,reference is made to my Patent No. 1,899,466, dated February 28, 1933.

In the light of the drawings and foregoing description it will beobvious to those skilled in the art that the several features of myinvention may be embodied in numerous specific forms and that the formsparticularly shownand described are to be considered merely illustrativeof my invention and not restrictive thereof.

I claim as my invention:

l. A sash-lock comprising a body, a projectable bolt movable in saidbody to position its bolting end in retracted and projected positionswith respect to the front end of said body, said i bolt being of suchlength that in its projected position its butt-end lies within thebutt-end oi said body, means for urging said bolt toward retractedposition, interengaging means extending between said bolt and body andadapted to rei.

tain said bolt in a projected position, way-means through the butt-endof said body providing for entry therethrough of means to project saidbolt and effect retaining interengagement of said interengaging means tohold said bolt projected and subsequently to manipulate saidinterengaging means to release said `bolt from retained position that itmay be returned to retracted position under the iniluence lof said firstnamed means, said body being of a length to be inserted in a sash memberwith its butt-end flush with the surface of the sash member and beinguniformly of its maximum tubular size throughout a substantial portionof its length including its buttend extremity, and thereby, when driveninto place in a sash member, presenting a generally smooth exterior atits butt-end and thus effectively eliminating any way by which said bodymight be pried loose from the sash member while locking the same.

2. A sash-lock comprising a. tubular bodyhaving an integral shelladapted to be forced into a. bore in the sash and provided with openingsat both ends and a bayonet slot in its inside wall adapted to retain apin at the forward end of the slot, a projectable bolt movable in saidbody to position its bolting end in retracted and projected positionswith respect to the forward end of said body and providedv with abayonet pin movable in said slot and adapted to be retained at theforward end thereof when said bolt is projected, said bolt being of suchlength that in its projected position its butt-end lies within thebuttend of said body, whereby a key is enterable through the opening inthe butt-end of said body and engageable with said bolt and pin assemblyto project the same and effect retention thereof by the forward end ofsaid slot and subsequently to disengage said pin from its retainedposition at the forward end of said slot, said body being providedadjacent its butt-end with at least one inwardly extending protuberancepositioned in the path traversed by said key in manipulating saidassembly to cooperate with a slot-arrange'- ment provided on said keyand enable manipulation of said key as aforesaid, and means disposedbetween the forward end of said slot and the forward end of said bodyfor urging said assembly to retracted position.

3. A sash-lock comprising a one-piece rtubular body having an internalshoulder at one end and a generally L-shaped bayonet slot with its foottoward said end, a bolt slidable within said internal shoulder toposition its bolting end in projected and retracted positions withrespect to said body and provided with a bayonet pin movable in saidslot and adapted to be retained at the foot end thereof when said boltis projected. said bolt being of such length that in its projectedposition its butt-end lies within the butt-end of .said body, whereby akey is enterable through the opening in the butt-end of said body andengageable with said bolt and pin assembly to project the same and turnit to eiect retention thereof by the forward end of said slot andsubsequently to disengage said pinrfrom its retained position at thefoot end of said slot, said body being provided adjacent its butt-endwith at least one inwardly extending protuberance positioned in the pathtraversed by said key in manipulating said assembly to cooperate with aslot-arrangement provided on said key and enable manipulation of saidkey as aforesaid, and means disposed between the forward end of saidslot and said internal shoulder for urging said assembly` to retractedposition.

4. A sash-lock according to claim 3 in which the butt-end of said boltis of less diameter than the interior of said body, to expose a part ofsaid bayonet pin in the space thus provided, and in which said key is oftubular shape and of a size to fit into said space, and in which saidslot arrangement extends longitudinally and circumferentially of saidtubular key to enable the aforesaid manipulation thereof.

5. A sash lock according to claim 1, further provided with studsextending through the walls of said body to coordinate the particularlock with a particular means to project the bolt and manipulate theinterengaging means, said studs extending outside said body toconstitute means for biting into a wooden frame in which said lock maybe mounted, to further assist in preventing removal of the lock from thesash member while locking the saine.

6. A sash vlock according to claim 1, further provided with studsextending through the walls of said body to coordinate the particularlock with a particular'means tovproject the bolt and manipulate theinterengaging means, said studs having heads resting against the outerwall of said body to limit the entry of said studs therein and toconstitute means for biting into a wooden frame in which said lock maybe mounted, to further assist in preventing removal of the lock fromythe sash member while locking the same.

'7. In a sash-lock of the type comprising a tubular body and operable bya key inserted through the rear end thereof, studs extending through thewalls of said body to coordinate 'the lock and key, said studs extendingoutside said body to constitute means for biting into a wooden fram-e inwhich said body may be mounted to assist in retaining said body therein.

8. In a sash-lock of the type comprising a tubular body andoperable by akey inserted through the rear end thereof, studs extending through thewalls of said body to coordinate the lock and key, said studs havingheads resting against the outer wall of said body to limit the entry ofsaid studs therein and to constitute means for biting into a woodenframe in which said body may be mounted to assist in retaining said bodytherein.

9.*A sash-lock comprising a unitary tubular casing having aninternalshoulder Aat its sash meeting end and at its other end agenerally longitudinal channel terminating at a lateral abutment wat itsinner end functioning as a bayonet slot, a bolt proportioned to liewithin said body and projectable through said shoulder to boltingposition, an abutment on said bolt lying in spaced relation to saidshoulder internally of said body between said lateral abutment andshoulder in retracted position of said bolt, a coiled compression springbetween the second named abutment and shoulder, a pin in said boltspaced from said second abutment and positioned for movement in thechannel and into engagement with the lateral abutment, movement of saidbolt into retracted position being stopped by interengagement of saidpin and said lateral abutment when the bolt is rotated, and meansproviding for the engagement of said pin and lateral abutment by aturning means to eiect alignment or misalignment of the pin with thelongitudinal portion of said channel and said lateral abutment to retainor release said bolt from projected position, whereby said compressionspring is prevented from accidentally engaging said channel in allpositions of said bolt.

10. In a llock of the type described intended for use in a closuremember having a cylindrical opening to receive it, a metal cylindricalshell with one ends adapted to be wholly embedded Within said closuremember to have a pressed t with the walls of said opening, one end ofthe shell being fitted for the reception of a rotatable` and endwisemovable key, a key-actuated spring tensioned bolt reciprocably mountedwithin said shell for projection through the opposite end against thespring resistance, guard means extending within the key receiving end ofsaid shell to obstruct actuation of the bolt by means other than thekey, and spaced means extending outwardly from the surface of the shelland `embedded in the closure member for preventing displacement of theshell.

11. In a lock of the type described intended for use in a closure memberhaving a cylindrical opening to receive ita metal cylindrical4 shellwith open ends adapted to be wholly embedded iwithin said closure memberto have a pressed fitjwith the walls of said opening, one end of theshell being iitted for thereception of va rotatable and endwise movablekey, a key-actuated spring tensioned bolt reciprocably mounted withinsaid shell for projection through the opposite `end against `the springresistance, and guard means ,bore in a softer material, one end of theshell being for the reception of a rotatable and endwise movable key,akey-actuated spring tens'ioned bolt reciprocably mounted within said`shell for projection through the opposite end against the springpressure, 'acircumferentially fextending abutment in said shell, andmeans on `the bolt adapted in its projected position to engage theabutment and prevent retraction of said bolt by said spring pressure,and means associated with said abutment and bolt to prevent rotation ofsaid bolt in its normal projectedposition, said associated means beingdisengageable byinward movement of the key to engage and move said boltaxially against the spring pressure, and spaced guard means within thehey receiving end of said shell for obstructing the entrance androtation of bolt manipulating means other `than said key, said guardmeans providing internal engaging means for an implement for withdrawingsaid shell from the bore.

i3. A sash lock comprising a body, a projectable bolt movable in saidbody to positions holding end in retracted and projected positions withrespect to the iront end of said body, said bolt being oi such lengththat in its projected position its butt-end lies within the butt-end ofsaid body, means for urging said bolt toward retracted position,interengaging means extending between said bolt and body and adapted toretain said bolt in a projected position, guard means at the butt-end ofsaid body providing a selective way for entry therethrough of acorrespondingly selective key to project said bolt and` effect retainingnterengagement of said interengaging means to hold said bolt projectedand subsequently to manipulate said interengaging means to release saidbolt from retained position that it may be returned to retractedposition under the influence of said rst named means.

lll. A sash lock comprising a body, a projectable bolt movable in saidbody to position its holding end in retracted and projected positionswith respect to the front end of said body, said bolt being of suchlength that in its projected and retracted positions its butt end lieswithin the butt end of said body, means for urging said bolt towardretracted position, interengaging means extending between said bolt andbody and adapted to retain-said bolt in a projected position, guidemeans at the butt-end of said bolt providing a limited slidingnon-rotatable connection between said bolt and a correspondingly shapedkey whereby to project and rotate said bolt and effect retaininginterengagement of said interen-gaging means to hold said bolt projectedand subsequently to manipulate said'interengag- 4ing means to releasesaid bolt fromfretained posi- `tion that it may be returned to retractedposivtion under the inuence of said first named means.

15. A sash lock comprising a one-piece tubularl metal'body having anopen butt-end and an inwardly anged forward guide end, a bolt adapted tobe loaded into said body throughthe open butt-end thereof and beingmovable in said body to position its holding end in retracted and pro-'jected positions with respect to the front end thereof, a shoulder onsaid bolt substantially midway its length and constituting, `with saidinwardly flanged end of said body, a guide means for said bolt, a coilspring around said bolt between said guide means for urging said bolt`toward retracted position, interengaging means between said bolt andbody including a bayonet slot in the body and a pin member insertablethrough'said slot, into engagement'with the butt` end of said bolt andadapted to retain said'bolt in `projected position, and guard meansremovthrough of a correspondingly `selective key to project said boltand effect retaining engagement of said interengaging moans to hold thebolt pro'.-

jected and subsequently to inanipulatesaid interengaging YmeansYtorelease the bolt' from retained position that it may be returned toretractedipositicn under the inuence of said spring.

i6. A sash lock comprising a one-piece tubular metal body having an openunlanged butt-end and an inwardly flanged forward guide end, a boltadapted to be loaded into said body through the open butt-end thereofand being movable in said body to position its holding end in retractedand projected positions with respect to the iront end thereof, ashoulder on said bolt substantially midway its length and constitutingwith said inwardly flanged end of said body a guide means for said bolt,a coil spring around said bolt between said guide means for urging saidbolt toward retracted position, interengaging means between said boltand body including a bayonet slot in the body and a pin memberinsertable, through said slot having engagement with the butt-end ofsaid bolt and adapted to retain said bolt in projected position, and aplurality of circumferentially spaced guards removably connected to andextending inwardly from the open butt-end of said body and constitutinga selective way means for the entry of a correspondingly selective keyto engage and manipulate said bolt into projected and retractedpositions.A

1'?. An improved lock installation comprising a sash member, a sash lockincluding a body, a normally retracted spring tensioned bolt movable insaid body to position its bolting end in retracted or projectedpositions with respect to the front end or" said body, interengagingmeans extending between said bolt and body and adapted io retain saidbolt in a projected position, way means through the butt-end of saidbody providing for entry therethrough of a key to project said bolt andeffect retaining interengagement of said interengaging means to holdsaid bolt projected and subsequently to manipulate said interengagingmeans to release said bolt from retained position that it may bereturned to retracted position under the influence of said first namedmeans, said body being of a length to be inserted in a sash member withits butt-'end `flush with the surface of the sash member and also havinga diameter relative to the diameter of the opening in said member sothat when press driven therein it is held in place within the sashmember solely by reason of the frictional engagement between the lockbody and the interior of the sash member, thereby presenting a secureinstallation having a generally smooth exterior at its butt-end and thuseiectvely eliminating any way by which said body might be 10 pried loosefrom the sash member while locking the same.

18. An improved lock installation comprising a sash member, a sash lockhaving a body of a length to be inserted in a sash member with itsbutt-end ush with the surface of the sash member, a normally retractedspring tensioned bolt movable in said body to position its bolting endin retracted or projected positions with respect to the front end ofsaid body, interengaging means extending between said bolt and body andadapted to retain said bolt in a projected position, way means throughthe butt-end of said body providing for entry therethrough of a key toproject said bolt and effect actuation of said bolt, said lock bodybeing of a diameter corresponding to the size of the opening in the sashmember and provided adjacent the butt-end thereof with means projectingfrom the body into the sash member, so that when the body is pressdriven therein, a tight secure installation is provided, characterizedby a generally smooth exterior at its butt-end, thus effectivelyeliminating any way by which said body might be pried loose from thesash member while locking the same.

19. A sash lock installation comprising a sash lock as defined in claim1,4, and a sash member having an opening therein of su'cient length tocompletely house the body of the lock and of slightly smaller size thanthe tubular portion of the body of the lock, whereby the sash lock maybe pressed into said opening into tight frictional engagement with saidsash member With its buttend flush with said sash member and thuseffectively eliminating any way by which said body might be pried loosefrom the sash member while locking the same.

20. A sash lock installation comprising a sash lock as defined in claim16, and a sash member having an opening therein of suflcient length tocompletely house the body of the lock and of slightly smaller diameterthan the body of the lock whereby the lock body may be press driven intothe sash member and wholly embedded therein by tight frictional holdingengagement therewith, thus effectively eliminating the necessity ofextraneous securing means and also any way in which the lock membermight be pried loose from the sash member while locking the same.

HERMAN H. KISTNER.

